為什么我按單片機矩陣按鍵時，蜂鳴器的功能卻都實現不了，求大神看看程序哪里錯了

ID:83671 · 發表于 2015-11-29 23:40

當每按一次點陣按鍵的其中一個時，蜂鳴器都會響一次，為什么我按點陣按鍵時，蜂鳴器的功能卻都實現不了，求教。。。。

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
uchar key=0,ke=125,n;
uchar w;
uchar a;
uint j,k,m;

sbit keyin1=P1^0;
sbit keyin2=P1^1;
sbit keyout1=P1^2;
sbit keyout2=P1^3;
sbit s5=P1^7;
uchar code led1[8][8]=
{

{0xFF,0xFF,0xFF,0x7F,0xFF,0xFF,0xFF,0xFF},
{0xFF,0xFF,0x7F,0x3F,0x7F,0xFF,0xFF,0xFF},
{0xFF,0x7F,0xBF,0x1F,0xBF,0x7F,0xFF,0xFF},
{0xFF,0xBF,0xDF,0x0F,0xDF,0xBF,0xFF,0xFF},
{0xFF,0xDF,0xEF,0x87,0xEF,0xDF,0xFF,0xFF},
{0xFF,0xEF,0xF7,0xC3,0xF7,0xEF,0xFF,0xFF},
{0xFF,0xF7,0xFB,0xE1,0xFB,0xF7,0xFF,0xFF},
{0xFF,0xFB,0xFD,0xF0,0xFD,0xFB,0xFF,0xFF}

};
  uchar code led2[8][8]=
{

{0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0xFF},
{0xFF,0xFF,0xFE,0xFC,0xFE,0xFF,0xFF,0xFF},
{0xFF,0xFE,0xFD,0xF8,0xFD,0xFE,0xFF,0xFF},
{0xFF,0xFD,0xFB,0xF0,0xFB,0xFD,0xFF,0xFF},
{0xFF,0xFB,0xF7,0xE1,0xF7,0xFB,0xFF,0xFF},
{0xFF,0xF7,0xEF,0xC3,0xEF,0xF7,0xFF,0xFF},
{0xFF,0xEF,0xDF,0x87,0xDF,0xEF,0xFF,0xFF},
{0xFF,0xDF,0xBF,0x0F,0xBF,0xDF,0xFF,0xFF}

};



void Delay(unsigned int i )

{
unsigned int k ;
   for (k=0;k<i;k++);

}

uchar  keyscan(void)
  {
keyout2=0;    keyout1=1;
   if(keyin1==0)
   {
Delay(10);
if(keyin1==0)
{

   s5=1;
Delay(200);
   s5=0;
key=1;
}
   }
   if(keyin2==0)
   {
Delay(10);
if(keyin2==0)
{
   s5=0;
   Delay(200);
   s5=1;
   if(ke==5) ke=5;
   else ke=ke-40;

}
   }
   while((keyin1==0)||(keyin2==0)) ;
   keyout2=1;    keyout1=0;
   if(keyin1==0)
   {
Delay(10);
if(keyin1==0)
{
   s5=0;
   Delay(10);
   s5=1;
   key=3;
}
   }
   if(keyin2==0)
   {
Delay(20);
if(keyin2==0)
{
   s5=1;
   Delay(200);
   s5=0;
   if(ke==245)ke=245;
   ke=ke+40;
}
   }
   while((keyin1==0)||(keyin2==0)) ;
      return key;
  }

   void  main ()
{

   while(1)
   {
key=keyscan();
      n=key ;

   if(n==1)
   {
        s5=0;
Delay(10);
   s5=1;

   a=0x01;

for (k=0;k<8;k++)

   {

     P0=~a;
a=_crol_(a,1);
for (m=0;m<20;m++);


   for (m=0;m<ke;m++)
   {w=0x01;
   for(j=0;j<8;j++)
   {    if(n==3)break;
      key=keyscan();
      n=key ;
      P2=w;
P3=led2[k][j];
   Delay(50);
w<<=1;

   }

   }

   }

   }

   if(n==3 )
{
   s5=0;
Delay(10);
   s5=1;

   a=0x01;

for (k=0;k<8;k++)

   {
     P0=~a;
a=_cror_(a,1);
for (m=0;m<20;m++);


   for (m=0;m<ke;m++)
   {w=0x01;

   for(j=0;j<8;j++)
   { if(n==1)break;
   key=keyscan();
      n=key ;
      P2=w;
P3=led1[k][j];
   Delay(50);
w<<=1;

   }

   }

   }
      }

}
   }